It's nothing too big, but i have noticed it is thought the two terms of Rev Limit and Redline are interchangeable. First, yes, the two terms refer to engine speeds in relation to high speeds. Also they do sometimes tend to reside in the same RPM bracket but the two are not the same.
First lets look at Redline. Redline is the term used to describe the rpm range in which the engine is enters into a "danger" zone according to a Marketing and manufacturing agreement. This zone is sometimes well below an engine's true "Redzone". A Redzone in relation to a Tachometer is the area in which the guage ceases to be diffident to engine speeds, normally marked by a LARGE Red band Hence the term RedZone.
Now for practical application. Dinan/Bayou Stage II roms, increase fuel delivery and also raise the...REV LIMIT. Rev limit as stated before is where the engine will cease to accelerate to high speeds. Redline is the Manufacturer's stated starting point of the "unsafe for daily use" area of a street driven engine. So Redline and Revlimit, though reside in the same area of engine operation, are not the same and in most cases cannot be interchangeable.
one:2cool: